Best available cop



EST AVAiLABLE COP R. P. BROWNIAND F. WAGNER.

MULTIPLE RECORDlNG lNSTRUMENT.

APPLICATION FILED .\ULY1,-1920.

1 ,422,920. Patented July 18, 1922.

12 SHEETS-SHEET 1.

B. P BROWN AND F. WAGNER. MULTIPLEIIECORDING INSTRUMENT.

APPLICATION FILED JULY 1. I920 I Patented July 18, 1922.v

I2 SHEETSSIIEEI 2.

gy f" f ATTOH BEST AVAELABLE CG?" R. P. BROWN AND F WAGNER.

MULTIPLE RECORDING INSTRUMENT,

APPLICATION FILED JULY 1. 1920.

Patented J 1113' 18, 1922.

I2 SH'LLTSV'SHEET 3.

INVE/VTOHS A from/5K BEST AVAELABLE U3?" R. P. BROWN AND F. WAGNER MULTIPLE RECORDING INSTRUMENT.

APPLICATlOH FILED JULY 1,1920.

i zigg ggg Patentefi July 18,

[2 SHEETSSHEET 4.

A from??? BESTAVNLABLE COP.

H. P. BROWN AND F. WAGNER.

MULTIPLE RECORDING INSTRUMENT.

APPUCATION FILED JULY 1,1920.

Patented July 18, 1922* I2 SHEtTS-SHEET 5.

I i m l III R, R BRUWNAND F. WAGNER. MULTIPLE RECORDING INSTRUMENT.

APPLICATIOh FILED JULY'I, 1920.

ESQQZQQQO Patented July 18, 1922..

I2 SHEETS-SHEET (i Bab? AWLA LE CC'F' R- P. BROWN AND F. WAGNER.

MULTIPLERECORDWG INSTRUMENT.

APPLICATION FILED JULY 1, 1920.

1,422,920. Patented July 18, 1922.v

12 SHEETS-SHEET 7,

7 I W F *"."\'T= ECG) 551:0) 1 H100:

one II LV.

WP wax 2170.95 M 7;

BEST AVAELABLE COP:

R. P. BROWN AND F. WAGNER.

MULTIPLE RECORDING INSTRUMENT.

APPLICATION FILED JULY 1.1920.

422 920 Patented July 18, 1922.

12 SHEETS-SHEET 8.

' BEST AvAaLAsLE 602 R. P. BROWN AND F. WAGNER.

MULTIPLE RECORDING INSTRUMENL APPLICATION FILED JULY 1,1920.

1 ,422,920. Patented J uly 18, 1922,

I2 SHEETS-SHEET 9.

4: IAN/Egg Z60 W wflw A ITO/Mfr BEST AVAELABLE CG? R. P'. BROWN AND-F. WAGNER.

MULTIPLE RECORDING INSTRUMENT.

APPLlCATlON FILED JULY 1,1920.

1,422,920. Pa ientel Z18,

BEST AVAEMBLE COP I R. P. BROWN AND F. WAGNER.

MULTIPLE RECORDING INSTRUMENT.

APPLICATION FILED JULY 1,1920.

12 SHEETSSHEET 1|.

IIVVE/VTORS Wi- 7 226? I AUOHAff 8E8? AVAM'XBLE COP R. P. BROWN AND F. WAGNER.

MULTIPLE RECORDING INSTRUMENT.

APPLICATION FILED JULY 1,1920.

l, -?;22,92G. Patented July 18, 1922.

I2 SHEETSSHEET I2.

UNI D, was

AVAlLABLE Ar OFFICE RICHARD r. BROWN AND FRITZ WA NEEQ or rnrnannnrf n a, ramsy' m,

Assrcmons TO THE BRQVJN INSTRUMENT comraivfyg or rm'LAnELrnm, PENN- sYLvA v A, A CORPORATION or rENNsLYLvAN Ia LQ MULTIPLE-RECORDING INSTRUMENT;

I plurality of units, suchasa battery of turnaces; to provide an electrically controlled timing mechanism arranged: to actuate a multiple recording instrument and operated automatically: to be maintained continuously in condition to function; to prdvide means ,fOI distinguishing the record of'any unit from any other unitwith respect to'which the instrument is responsive; to provide means for causing a double dot or indication to he made upon a chart; to provide 'means for intermittently I changing 1 the recording mechanism to make either a single or a double dot as desiredyto provide means for changing the color of the recordto be made 'upon the chart; to provide means for causing the depressor bar of a recording instrument to be operated by gravity; to provide means for feeding a chart auton'laticallyand in timed relationto the recording mechanism of a recording instrument; to provide a recording instrument varranged to successively respond toa plurality of thermocouples; to provide rneans for selectively controlling a plurality of I thermo-couples to cause each or any one 'tobe recorded with a distinguishing characteristic upon a record chart; and to provide other improvements as will hereinafter-appear; I i

v lathe-accompanying drawings, Fi 1 represents a 'front elevation of a recorc ing instrument embodying the presentinvention; Fig. 2 represents oneside elevation, with the casing brokenaway, or the same; Fig. 3'represents the other side elevation of the instrument. also with-the casingrbroken away; Fig. 4 represents a front elevation of one form of operating control mechanism; Fig. 5 represents a tront elevationof on" form of timing mechanism F 1g.' 6 represents one side eleva= tron ot the; 0perat1ng -'-control m'echanism Fig-7 represent-s the other sideelevatitinof T the operatingcontrol mechanism{Figi 8 represents ia s'ectional 'idetail of the general ratchet andpawl' construction employed in the control :mechanism j Fig. 9 represents "a P a owin -the recordingadjuncts of the nstrument; ig'. '10 represents-a detail" in plan of the ribbonmechanism: "-Figsi ll and 12 represent{ respectively? end elevations of the ribbon mechanism FigJ1'3' represents a detail in side elevation of the depressor bar '3' and the recording 'adjuncts;"=Fig.'- Mfrepresents :a 'detai1 in 'section of the; movable knife and zits adj unct's Fig.) 15"represents a front elevation of one form of electric control 1 rbr the operatin-g meehanism'; Fig. 16 represents a side elevation "of; the same Fig. '17 represents an felevation, partly broken away; of one side} of the tirning" inechanism Figs. 18 and 19 -represent respectively detailsof one form of commutatorcontrolsvvitchi Fig. 20 I represents a dtaii, partlvdii section, of the contactor element of the switch'j -Figfllrepresents adetailin lan-of'fone of the contact control switche's; 'Fig. 22] represents aside elevation 'of'the same,"showing the position of the'parts ivhen the contacts are'closed; Fig. 23 represents-a1 detail in side elevation of the depressor bar control cam; Fig. 24 represents an end elevation of Fig. 23; Fig.

25 represents a diagram of the solenoid control circuits"; and Fig. 26 represents a diagram of the winding solenoid and cut out solenoid circuits. ,1 U A Referring to the drawings, one form of the present invention is shown, the parts being enclosed within a suitable casing 110 rigidly mounted on Y supporting back plate 11 and having a door 12 at thefront for access to the interior. The door 12 is provided with a transparent portion 13 of glass through 5 which the record of readings or. indications of the instrument can be readily viewed.

For the purpose of indicating temperature conditions at. any location or at a plurality of locations,an*electric meter let is provided having an indicatingpointer 15 fixed to the electrically controlled movable elementof the meter in order to swing freely in the manner required and preferably ina horizontal plane. The meter 14 maybe of any tlc- 5' AVAlLABLE C construction suitable for the purpose and it is deemed unnecessarytohere explain the details 0+;- Efits 5 construction as it v is a ivell j known: type "operated by variations iii the current of a thermo-couple, thoii gh" in"the present instance it is arranged to con trolled by a plurality of 'therin o-couples each being arranged to be controlled by a In order to successively c nnect theseveral.

. carrying a ring contact 23 connected nieter lttandia ciI'c ular ic ntact Q-S connected by; a conductor 2G to the other terminal of the ineter l t The element QiZ also carries by a conductor 5A: to one terminal of the tivo sets of LSGgIElQIltQl IlHgCODMtCtS QT-and ZS LarranQed in pairs, radially considered, o ieolir lie,. ac t-l nelp being nectedlbya conductor 30 to one of the terof a-thermo-couple, and the other cont ctgpf f that -pair being connect'ed by a cond iictor 3l to the other-terminal of the same thermocouple. .It Will-be understoodgthat pair of these contact segments is simila ly connected to thermo-couple, there being the same number of {pairs of segmental contacts as there are thermo-couples. The

arriifige nnt of the four sets of contacts is CODQB IItIlQ and each-is electrically insulated from allof the others.v The respective v pairs of,segm ental contacts 27, and 28 are separately eonnected to the meter 14 by means ofati'vo bridge contactors 32 and 33 fis e d to :1 rotatabledisk 3%,also enclosed in the case 21, and arranged to locate the contaetors 32 and 33 in opposed relation to the contacts carriedby the'element The bridge contactor 32 is fixed iin position to electrically connect the ring contact 23 with the selected segmental contact 27, while the bridge contactor 33. is fixed in position to electrically connect the contact 25 with the segmentalrontact 28 it thesame pair. he

cont actors 32 and 33 are insulated from each otheron the disk 3a as will be understood. The rotatable diskvfid is preferably numbered orprovided withany suitable indicialto designatethe thermo-couple s1.- lected to operate the meter, and the case 31 isfsuitably a p crtured so'that the identifying indich isvisible.

In. rder to rotate the disk 34: and impart thereto a step by step motion which"will successively connect the thermo-couples with the meter 14 .in a predetermined 1 timed relation the diskil is fixed to a shaft 35 journalledhin, the side. walls 36' and 3110? a "lJOXJBS, which. serves as a contai ner fonthe general timing mechanism of the instrument. The shaft 35 has a ratehet 40 (111g, 4) fast thpreonand arrangedto be intermittentlyactua 'd'by a springflpressectpayvl 41;\vhieh is p oted to a "plate 42' integral \vith"oi-"secured to a slee ge g This sleeve 43 is free to turn relative to tlie sliaft 35 and is rigid with a gearatin mesh with a main driving gear 415 keyed to" a main rock shaft eewhicapm As a' meansforlmounting the;chart.paper 50in operative relationeto the marking -adjuncts, a pair ofibrackets55 extend outward from the back;plate 11 and are arranged :to form bearings] for a chartlusupply; reel or spool '56 from. which the chart paper 50- is fed upwardly and; over an. idle--roll:: -57 journalled in a frame 60 supported ini'any suitable manner from the back plate 11:01 anyv other fixed Ipart. Leavingiithe; roll: 57 the paper.50. passes-between the pointer 15 and the knife edges 53; andr54 and iover the roll 61 where ittraverses. across the casing door 12, (being visible.throughithe'glass 13) and around the feedrolla, 62. over a guide rod 63 to the reroll-.spool '64 The chart paper 50 is providedgwith edge perforations 65 .to mesh, with spacedj projections orl ins 66 on the ends of the roll 62for properly feeding the paper. The rerollspoolrfitis removably mounteddn arms 67 supported by laterally disposed bars 68 in which a shaft 69 is 'journalle'd carryingthe "feed roll 62. Y 1

For properlytensioning the chart paper 50 and causingit to Wind evenly and smoothly a rod 70 is provided extending'lparallel to the facerof the feed roll 62. and secured at its ends-to dependingv arms 71 which areirespectively pivoted'to thebars 68. Springs T2fconnectthe respective arms 71 to the bars 68 and operate to hold theiod 70yieldingly against the chart paper asit passes the feed roll 62. An idle roller 73 :is also arranged to bear against the chart supplyvspool 56 to prgvent. improper unrollingat-:the supply en p For feedingthe chart50 step by step and in timed-relation to other operations offthe '75,- Which is fast on a spindle 76 suitablv journalledj on one of the bars 68.; A bevel -pinion -77 iskeyed-to the spindle 76 and meshes with a similarpinion 80 (Fig. 6)

.fast to a shaft 81 which is rotatably mounted in the walls 36 and 37 of the box 38.- The shaft 81 is fast to a ratchet 82 which "is arranged to beintermittently actuated by a spring-pressed pawl 83 pivoted to aplate .84:integral with; or secured to a sleeve; 85. Thissleeve 85 is free to turn relative to the shaft '81 and is rigidly fastened toageal 86 :whichisdriven by gears 87 and 44 from the main driving gear45; =5. I .I Motion is transmitted from the-feed roll shaft 69 to the 'reroll spool 64 by a gear 90 keyed to the shaft 69 and meshing with a -gear.-91.which is;in'-mesh with a pinion 92 keyed to the reroll clutch 93, this latter being arranged to removably hold thespoolin a well known. manner. -Thegear ratio is properly proportioned to accurately take up the chart paper-with each step'by step-movement. I. 3 a;

i 1 For supporting and positioning 1 the 'ink ribbon 51 with respect to the recording ad- .jun'cts, a carriage. 94 is provided having .channelsj95 arranged respectively -.to interfit vithparts of the frame 60 for sliding movement relative thereto. T heearriage-94 pro- '-v'ides bearing supportsfor a ribbon supply spoolx96 andaribbo'n winding spool 97 suitably-spaced apart, and also" has two guide rolls 100-and 101=arranged to cause the "inleribbon 51 to pass transversely.- of the JframeGO and in a plane'parallel tothe chart 5Obut between the said chart; 5O and the .knifeedge or edges 53 and-'54. i F 'IIIZOIClBI tO fQQd the-ribbon 51in the: desired manner the winding 'spool 97' has a worm gearilO2 fixed to its shaft 108 andin mesh with aworm 104 (Figs. wand: 12). fast to a spindle 105 which is suitably journalled onrz'the carriage 94 and has -a rath'etlOG keyed thereto. a The ratchet 1062is arranged to "be operated' periodically by a"-spring pressed pawl $107 pivoted to a disk. 108 formed upon a sleeve 110, which is loosely mounted on thespindle 1051and has a gear 111- fast thereon. I Y

The gear 111 is in mesh with a pinion 1'12 arranged. tobe driven by'ra rack gear 113 which :meshes .with a rack 114 formed on one of the side members of the fir-ed supporting'frarne 60; The ratio of the train of gears ust described is such as to-feed the ribbon '51 in'a relatively slowe-ma'nnerstep by step and in predetermined timed rela .tion to other operations-of the recording mechanism.

In the present form of the invention employedfor multiple recording it is desirable to produce record marksuupon the chart 50 by which each mark identifies th e particular unitmaking'the record and for that purpose the ribbon-51 is subdivided as to color into fa'plurality of strips'115. each: of a color .for recording.;the correspondingunit indidifferent-from any of the other strips. The number of colors corresponds tothe number of furnaces or other devices the temperatures or other conditions of which are to be recorded-,and in thepresent form five such strips are shown byway of example; though as the instrument here described is arranged to record-but eight units-one of the strips ll5-fi's-idle while each-of the other strips serv'esto identify two units, this being accomplished by'as'ingle dot and a 'double dot ifrom teach strip: as i'LWlll i be presently describeda Itmwill, be understood;however, that this identifying: record construction is but zonezwayi of accomplishing the desired end ,and'ithat thecon struction may be variously-linodified within thefscopc of the inventionnfl i One means for shifting the ribbon car-- .riage 94 to locate tl'iefiparticular strip 115 cation -consists' in: providing pins "at opposits. sides rrespectively of the carriage 94 and projecting laterally to a seat i respectively *betweenthe bifurcated ends 121 and 122 of two rock-arms 123 and 124 (Fig 3) which are. fast. .to avroclcr'spin dle 125: The rock spindle'125' isjournalled in lugs 12 6 "depend- .lngrrespectively' from':the brackets'55', and receives iitsrmotion 'from an arm 12? fast thereon and connected' by an adjusting stud to a link 131 which is pivoted on the spindlefl 125;. andhas a bifurcated end 132 straddling-Va pin li33xfixed to adisk 134-. The :arm'JiZLis'provided with a slot 135 through which the stud 130 passes,- so'that the carriaged94- canbe adjusted-"to'assume a rest position with the particular ribbon strip in alinement :with '='the knife edge mechanism. -The'- disk 134i is fast to arotary shaft 136 journalled in the wallsi36 aud 37 of the box -38 andisxarranged to be intermittently actuated by a suitable' mechanisin such as a Geneva wheel miniprising a gear 140 fast to the rotary shaft 136, arranged to be driven by a two segment gear-141, and two locking disks 142 and 143 (Fig.7 theformer being fast-to the'shaft 136'and having four cut away portions "144 inits periphery. each having a contour formed on the same radius as the disk 143. Thezsdisk 143 is similarly cut away at-its'periphery and inane fast to a driwing shaft 145- inposition toxmesh with the disk 142; so thatwhen the-gear 140 is out of mesh' with either of the gear segments 141 it will be held against rotation. 1 The segmehtal'gean isalso fast to thedriving shaft 145. this latter being journalled in the walls "36 and 37 and actuated by a ratchet 146 fast thereon which isdriven by a spring pressed pawl 147 pivoted to a plate-150 integralwith or securedto a sleeve 151 (Fig. "4) loosely mounted on the shaft. 145. Y The 'sleeve'l51 has a pinion 152 keyed thereto and in mesh with the main driving gear 45.

in order IU-I TMSitlVQly lock the Geneva gear between its operating movements :1 star wheel 153 is fast to the-shaft 145'and has four peripheral radial slots 15 1 which are arranged to successivelyreceive a locking de- .156 in a direction to remove the detent 155 to release the Geneva gearing; when the trip .160 Withdraws the spring 15? returns the arm 156 and the detent 155 again interlocks with the star \vheel 153. From the foregoing it will be evident that the intermittent gearing causes the pin 133 to assume four rest positions and in consequence theribbon carriage 94 will have four different rest po- 'sitions with respect to the recordingdevices all' as will be more fully explained -in the description of the operationof theinstri1- ment as a whole.

As ameans for causing a single dot or indication to be made upon the. chart- 50 the knife. edge 53 is provided. being-fixedly mounted transversely of the stationary frame 60 parallel to and lieneath the ribhon 51.

For causing'a double dot or 0t 10! double ;record to be. registered upon the chart 50 the knife edge 54 (Fig. 141-) is provided. the same being movably mounted parallel to the knife edge 53 and relatively closethereto. The knife edge 51 is rigidly secured to two studs 161 which pass freely through a bar 162 fast to the frame 60, the studs 161 having a neat fit to permit the knife edge 5% to rise and fall the necessary distance. but. atthe same time maintaining the knife edge 54 parallel to the knife edge-53. The respective studs 161 are encircled by coiled springs 163 which act between the knife edge 54 and the fixed bar 162 so that the knife edge 54 is returned to its normal position inthe same horizontal plane with the knife edge 53.

In order to lower the knifeedge 54 below the knife edge'53 at predetermined intervals two arms 16 1- are secured to the studs 161 respectively and have their opposite .end pivoted at 167 to a link'168,whichhas AVAlLABLE CG? pivotal connection with-ar cam lever 170 'iivoted at 171 tothe-boxr38. The other-end tion,- wherebyra single aanda double indicationtake placei-through the same color strip as Will-.be' explained- 1 For; causing the pointer- 15 to strike the chart "50 and through: the a-nvili'aotion' of the lmifeedge 53 or both OfZtllG knife edges 53, and 54: .:-recordan' -indieation or a plurality 1 of indication by th'e ribbon '51 being pressed --momentarily. -againsta the chart 50,

the depressor bar 52 is provided, the same A being. 1p referablydugshaped with its =sides'173 fi-xednto 3"1'OCk1'SP1I1dTGfl74' ahd its comieeting bar 52 being esubstantiallyn-parallelz to and above the knife edges' 53'and54and also above the path of the pointer lfii so that in any operative positions-of: the :pointer i 15 iit will be struck byrthedepressorr bar 52 when the latter falls =for the' purposerof making: a record." In the: presentconstructionsthe depressor. :bar 52 is :arrangedarto 5 drop i by gravitv being-normally held above and' outof contact \vitlrethe zpointer 15: 1) am =a1'm1-l75 (Fig; 3) fast to -tlie spindle-114mb one' end and at its otheri endpivotally secured to aconnecting rod-176=whichi is pivoted to a lever 177, this lastzmer'nberibeingipivoted at 180 to the wall.36 and' having its 'freet'end held in raised position by a knife edge member 181 resting uponzthe surface'of'a cam 182. The cam 182 is fast to a-shaft 183 and has three release notches so that for each revolution 'of the shaft'=183 therlever '177- is released three times to drop the depressor bar 52. The shaft 183 is'fixed-to'arratchet 181 (Fig. 4) arranged to be given a step by step movement by a spring pressed pawl185 pivoted to a plate 186 rigidwith 'a sleeve 18? which is loose on the shaft 183 and secured to a pinion 190 in mesh with themain driving gear 45.

In order to'insure the depressor bar 52 dropping before-any change in the position of the recording mechanism takes place,'the shaft 184: 'has-arnotched-disc 191 (Fig; 23) fast thereon and arrangedto engage a spring pressed pivoted finger 192 havinga :lug 193 in the=path of thedisc-i191 to prevent tu'rning of-the shaft 'il83 in -its operative direction unless the high-193 is removedrw-The free end of the finger 192 is locate'din the path of increment" of a set screw v 19d or equivalent means proj ecting. I from the lever 177,.so that "when the-lever 177 is released WAILABLE one bfthe 'c ami l82 a fraction a second will elapse be fo re fthe,setscrew 194 strikes and removes the finger 192 'froin' locking engagementTwiththe 'discfj191, This insures the depressor, bar 52 operating in fits" proper timed relation to the other parts] h'l orthepurpose of oscillating the lever periodically, to cause the controlled mechanisms to, operate, it is connected by ii crank l pin" 195 .a'nd, clamping screw 196 :(F 15) fto' a "yoke or socket 197 fixed to zric1anl arm198 which is keyed" or otherwise' made fast to a rockshaftI200. In the present construction the roclcshaift' 200. is joiirr'ialled tran srei sely ot'a casing 201 and is' foscillated a gear. segment keyed thife'oiifand" in h at dianietricallyi'oppd site points's'vith' two racks eoaa d'eoi (Fi 16): enters-1e "respective y "attached in a rigi' *inan'ner'to'two'platesl205 and 206 and peo efly"gui;ded;-by'-1-o11ers 207 fand 208 joli'r' "tilled for ;tree rotation; The plate 205 whine fast to it "dimme core 210 of apair at soleiioids 211,-and the plate206 is made fast'to ddouble' 'core 212 of a second pair of sol enoids"213', the pairs of solenoids 211 andj2l3 being arranged to The alternately e'rfergized'tdcaiise the desired oscillation of the shaftf200, f

Ii'norder to alternately energize the solenoi'tlsl2ll 'and 213 to upmr umm in a predetermined ti'm'ed relation"the solenoid 211. which ma be called the front solenoid, is included in "-i circuit receiving current from the iii'ain terniinals" 214- and 215 and in chidinjg =1 conductor 216 connected to'a spring ar -21 carrying a co'ntact 218' and aconductor 226 connected to a spring arm 221 iiiriyinga contui-t'222, the two arms 217 and 221 being mounted ininsiilated relation upon i-braekct'22I-3 with the contacts 21 and 222 in opposed relation 'and normally spared apart-'so 'that the circuit is open. The solenoid 2l3,\\'hicli may be called the back solenoid',- is included ira 'circuit re: eiving current from theterminals2l4 and 215, or any other source of current and including a conductor224 connected to a spring'arm 225 carrying a contact 226, and a Conductor 227 connecte toa spring arm 228 carrying a contact 230, the two arms 225- and 228 being moi nted in insl'ilated relation upon a bracket 23 wi'tli the contacts 226 and 230 in opposed relation and normally :SPZLCGd apart so that the' 'ircuit is o1')jen. "The two sets of contacts are arranged to be'alternately closed by a. two poin t cam common to both sets '2), which islfast to a spin dlefl233 drii'en by x i-suitable timing mechanism such as a clock work'234. The cam 232, istinied iii"a "predetermined manner to close one set coiitactsYsay 218 and '222,'and then' after an internih for example. fifteen seconds, close the other set of contacts 226 and 230, one set always being open when the other set is closed to thus alternately energize the front solenoid 211 and the back solenoid 213, where the shaft 200 is oscillated in'the required manner. In connection with the con- L ct carrying arms it should be noted that in each pair the ends ofthe arms, which rest upon the ram 232 (Fig. 22). are bent to lie in ie same plane, though without touching, the end of one arm is slightly longer .1 1 the cooperating arm, so that as the "2.171 23; rotates slowl the shorter arm will a off the cam first and thereby close the contacts momentarily. Assoon as or arm snaps from the cam232 the tact is broken and the'cont-rolle'd circuit is again open. or the purpose of automatically. winding the clock mechanism 234 it'is royidedwith a' .Tindi ng, shaft journ'alleg in any suitable manner and arranged towind the main spring 236 of the clock mechanism, In' the present construction this ivinding shaft 235 has a ratchet 237 fixed thereto, which ,islield against reverse turning by a spring pressed pa rl 2 1O and is arrangedto be givena-step by step morement'by a spring pressed'pawl 24:1 pivoted to the short arm of a lever 24:2 which is piroted for oscillating movement and has a long arm extending laterallyand loosely held adjacent its 'end by a slotted 5 head 24-3. In order to reciprocatetl el ead 24 it is made fast to a rod 244 which' is 'rig idly secured to the core 245 of aipair of soleopposed the lon noids the said core 245 being located at the opposite ends of the solenoids 246 from 4 3. so that when the solenoids 246 are energized the core- 245 is drawn up to shitt the lever 24.2 and move the pawl 241'. to t n-age another tooth of the ratchet 237. The

ht of the core 245 taken with the relall\ L long leverage oillie lcrer 242 is Sulli- (i911! to :1 mice the ratchet 23? each time he mlenoid246 is deenergizcd, so that the sep by step winding takes place by gravity action and consequently should the .main spring 236 beconae fully wound the core 245 is held suspended and the winding ceases for the time being. i y

is a means for periodically energizing the solenoid 246, one end of the solenoid windingis iOIlHQfJllCil by aconductor 250 to one of the line terminals, say 214:, While the other end of the solenoid winding is connected by a. conductor 251 to a spring arm 252 of 1r circuitclosing device including a second spring arm a bracket 2-54., by which both the arms 252 and 253 are supported at one end in insulated relation, two contacts 255 and, 256 anda rotatable circuit closeri257. "The contact 255 is fixed to the arm 252 in 12b opposed relation to the contact 256, which is fixed to the arm 253, and the two contacts are normally spaced apart. The ends ofthe arms 252 and 253 are arranged to lie in the I Y sa'me planefout of contact, and in the path 110 I iVi HlJ-KBLE fr ci ii the a-rnii 253 to the other line terminal in' 'jits windinmc'onnected in, arallel across .q 2-, i v

the terminals 214 and 215 by conductors 271 and272, ,while itscore 27 3 is joined to a lever le\;er';274' isarra- Iigedto suspend a brakesh oe 27:6 iiiclose proximity to th'eperiphery ofa ta1a e he1 277 of the clock mechanism, t e: arrangement being such that when the solenoid 270 is energized the brake shoe 27,6

- is helda WayZfrom.tliebalance wheel 27?, but

when thecurrent iscut elf and the solenoid is deenergiz'ed ,then the brake shoe 276 rests .against the balance wheel 277 with suffiei ent frietion to stop the entire clock mechanism, l

I0 protect the several solenoid controlling means it is preferable to provide resistance coils 280 which are respectively included in the solenoid winding circuits as will be un derst'ood, urther, for convenience in making the electrical connections of the instrument, a plurfilityofbinding bars 281 are providedj the same, in this form of the invention serving to connect the respective circuit breaking devices tothe several solenoid cireriits. Alsoa plurality of binding posts 282 are arranged in pairs at convenient locations uponthe cas ng l0. each pair being joined by conductors .to its thermo-couple at the dist'ari'tpoint. theusual manner.

iF ori facilitating the reading of the chart Q, which preferably of the transparent typei t is arranged to pass back of the easi i'gi glass but in tront of a plate 283 havtr g enamehor anypthensuitable surface g lI1, St.}Vl),lQl1 the record chart is clearly outne for taking readings of recorded data. In le sci); the operation of the instrun ent, ;1t v 51 assumed that the chart 50 real 1.1134??? Fl ea y to p ratease? ationpthat the bindingc posts 282 are operatively connected 7 to x the respective controlling.,thg mo oo.uples.and alsoto the commutater switch ;.thatthe operating parts for theroclrsha ft 200 are in the position shown in Fig. l6;,and, that the elock234i-has been around. asisoionafs the cnrrent is turned on the solenoid 270 is energizedand pulls its core 273 to shift the l ever. 274 in the proper direction to asement brake shoe 276 from engagement with the balance wheel 27 7 to alloiv the clgpohgxneohanism 234 to start and continue .ru'nning as ,long as the solenoid 2T0. isf energized. i a

rotation ofthecam circuit closer 257 causes thefcoiit-acts255fjand 256 to ,meet nom nt ily a intervals jd nsgfi ire e e n of stafii 8 therebyjclosing the circuit of the e id 46 r r' tlm l y; ere y, th or 24 ise' i sed-ee tim h o neid.-2t i energized and ,falls by gravity when the seess hannell d Th m re ren ne e etbyigm y s e awa f in stroke and. causes the lever 242;,to advance he ratchetQ237 a to vind the clock, mechanism and maintain it in ai woundcondition,

hespindle233 is,no v. rotati g slowly and se s eu i lin he m f e s. es pe iti wherethe spring arm 228 is released vvand ln'ings,the c-ontacts 226 and 230 into engagementto close the circuit including the back solenoid. 213. .Qllhe energizing of the solenoid 21 Sishifts thecore r aqk204to cause,the gear segment 202t0. rock ,the shaft 200 in a directionito swing the crank arm 198in aoounterclockwise direction whereby motion is transmitted through the operating lever 47 t0 the main shaft 46,0fgthe ratchet control mechanism in the ratchet box 38. As viewed in Fig. 6. the partial rotation otthe shaft 46 turns thc main gear counter-clockwise to cause the Geneva gear mechanism 1,40 and 141 to,turn through a quarter revolution and also turn the earn 172 through va quarter revolution. The Geneva gearing is released t ne trip L engaging thefinger 158 to remove the arm 156 from its locking position, and it the segment 141 is in mesh with the the shaft 136 is turned through a quarter revolutionand the ribbon carriage 94 J ioved to-bring ,the required ribbon color aiove the knife edges 53 and 54 to correspond to the position of the parts at that time. The lateral travel of vthe carriage 94 causes .the ribbon 51 to receive a feeding movement as has been described The movement of th e cam 1-72 in this instance causes the leverlZO to actuate the parts connected to themovable knite edge 54 and lower this edge belQW the fined knife edge 53. The chart,50lhasalsobeen given astep movement bv the foregoing action of the main gear 45 and the instrument is now in position to record a single. clo t say of redcolor upon the iehe tt- .e

the second thermo-couple.

.23? AX AlLi RBLE CF)?" 'At the end of a predetermined interval, for example fifteen seconds. the clock driven spindle 233 brings the cam to a position where the spring arms 217 and 218 come together to close the circuit of the front solenoid 211 through the contacts'218 and 222. The energizing ofthis solenoid 211 swings the gear 202 in a directionreverse to its former movement and thereby returns the crank arm 198, causing the operating lever 47 to partially rotate the-main gear 45 in a clockwise direction as viewed in Fig. 6. This action turns the cam 182 to drop the lever 177 and through the connections 17 6 and 17 permits the depressor bar 52 to'fall by gravity whereby the pointer strikes the chart 50 above the knife 53 and registers a single dot of red color bymeans of the interposed ribbon 51. The resultis anin'dicationupon the chart 50 of a temperature condition at a location controlled by a certain one of the thermo-couples. Following the operation of the depressor bar 52 the continued movement of the main gear 45 causesthe ratchet to advance the commutator switch20 one step to connect a second thermo-couple to the meter 14 and, of coarseQdisconnecting the thermo-couple which has just recorded.

' Afteranother period of fifteen seconds the back solenoid 213 is again energizedto cause the main gear to swing counterclockwise but on this stroke the Geneva gearing has a rest period so the ribbon carriage 94: remains in its formerposition with the red color still above the knife edges 53 and 54:. This stroke,

however, causes thecam 172 to release the knife edge 54, which returns to normal p0 sition under the action of the springs 163 ready to record a doubledot upon the chart 50. VViththeparts'so positioned the front solenoid 211 isenergiz ed. after the fifteen second period and the main gear 45 again reversed in position, thereby'releasing the depressor bar 52 with the result that two red dots appear on the chart as the record of Following the action of the depressor bar 52, the commutator switch 20 is again actuated to connect the third thermo-couple to the meter 14: for the next recording stroke. The intermittent action of the Geneva gearing sets the ribbon color for'twothermo-couples. while the movable knife is actuated to distinguish between these two thermocouples by indicating a single dot for one and a double dot for the other. hen this has taken place the GGIIGXWL gearing has reached the end of its rest period and causes the ribbon carriage to shift a definite distance to bring another color to operative position for two other thermocouples, and in this-manner the cycle continues with the parts working in. accurate timed relation.

"Having thus described our invention, we claim:

1. In a recordinginstrument, a meter arranged to respond to a plurality of electrical controlcircuits one at a time, means for connecting said meter with the respective control c1rcuits,-'a recordstrip. means for recording on said strip the respective indications of said meter, and means including a movable anvil element to vary the number of the recorded indications for identifying the recorded indications with the respective control circuits Q j v "2. In a recording'instrument, a meter arranged to respond to a plurality of electrical control circuits one at a time, means for connecting said-meter with the respective control circuits, a record strip, means for recording on said stripfithe respective indications of said meter,' andmeans, including a mechanism tovary both the number and the color of the recordedindications, for identifyingthe recorded indications with the respective controlcircuits:

3.Ina recording instrument, a meter arranged to respond to a plurality of electrical control circuits one at a time, means for connecting'said meter with the respective control circuits, a record strip, means for recording on said strip the respective indications of "said meter, and means, including a movable knife edge to vary the number of the recorded indications, for identifying the recorded'indicatio'n's with therespective control circuits. I

4, In arecording instrument, a meter a rranged to respond to'a plurality of electrical control circuits onef at a time, means for connectingsaid meter with the respective control circuits, -a record strip, means for recording "on said strip the respective indications ofs'aid meter, and means, including a movable 'knife edge,' 'and a multi-colorcd ribbon to vary both 'thenuinber and color of the recorded indications, for identifying the recorded indications with the respective control circuits. I I

In a recording instrument, a meter arranged to respond to aplur'ality of ele 'tri cal control circuits one at a time, means for connectings'aid"meter with the respective control circuits, a recor'd strip, means including a knife edge for recording on said strip the respective indications of said meter. a movable knife edge arranged for recording purposes, and means to vary the positionof said'movable knife edge at predetermined intervals to cause a single indication to be recorded to identify one control circuit and a'doubleindicatio'n to be recorded to-identify another control circuit.

6. In a recording instrument, a meter arranged to respond to a plurality of electrical control circuits oneat a time, means for connecting said meter with the respective control circuits, a-recordstrip, means including a knife edge for recording on said strip the respective indications of said meter, a movableknife edge arranged for recording: purposes, -means to vary the position of said movable knifeedge at predetermined inter- ;vals to cause a'series of singlei'ndications to be recordedto identify-certain of said control circuits and a 'seriesiof (1011bl6;.111(l121- tions to be recorded .to ;ide nt-1fy I the remainrespectively for identifying the respective control circnits of each=series of-indications.

;7.- 1n a.recording instrument, a meter -ar rangeditoirespondto a plura'lity of electrical -control ci-rcuits oneat a time, means for connecting said meter avith -the respective controlicircuits, a record strip, means including mk ni-fe edge forzlrecordingonisaid strip the respective indications :of said meter, ;a (movable knife edge arranged 'forrecording purposes, i'means to .Yaryi the position of ,said movable knife edge at jpredeterminedilntervals to-icause gamer- 188 sc s gle indications to be, lIIQCOI'dQdqtOiddBIltif) ;-certain .;of said .-control circuitsi and a series of double indications; to be ;recorded itO identify; the :remaining control circuits, and :means, including ga multi-colored :ribbon, for dentifying the \respective. control circuits of-each series Of-IIKlICatIODS.

8. :In' a: recording instrument, a meter arranged ytogespond to a'plurality of electrical control circuits one at a time, means for connectingsaid meter with the respective control circuits, a;record.strip, means including a (knife-edge for recording on said strip the respective-indications of said-meter, a movable knife edge arranged for recording purposes, lmeans to vary the position of said movable knife edge-at predetermined intervals to cause a series of single indications to be recorded to, identify certain of said control circuits and a series of double indications to be recorded to identify the remaining control circuits, means, including cording. purposes, a .mult-i-colored ribbon arranged between said record strip and said knife edges, andmeans for varying the relative positions ofsaid knife edges and said ribbon to eause differentcolors to be recordingacontrol circuits, and-means to vary the :color of the singleiandLdOuble indications for intermittently -rendering one -of said knife edges inoperative for recording purposes, a multi-colored ribbon arranged be tween said record strip and saidknife-edges, and means for-varying the relativepositions of said knife edges and saidribbon .tocause different colors to be recorded to identify certain of said control circuits.

111. In arecording instrument, a meter arranged to respond to a plurality-of electri cal circuits one atja time, means :for con necting said meter with the respective-icon;-

trol circuits, a ,frccord strip, means, includ-. ing .-a.plurality of knife edges for recording on saidstrip the respective indications of :sa idI meterameans for intermittently rendcring=one of said knife edges inoperative for recording purposes, a 'multi-colored ribbon arranged between said record strip and said knife edges,--an intermittently actuated mechanism for feeding said ribbon, and means fori-i 'arying the relative positions of said knife edgcs and said. ribbon to eausedifferent colors tojbe-recorded to identify certain of said control circuits. 1

12- Inarecordinginstrumenlga meter -ar ranged to respond (to a plurality ofelectrical circuits one at a time, meansfor connecting said meter with the respective control circuits. a record strip, an intermittently actuated mcchanism forfeeding said record strip, means, including a plurality of knife edges for recording on said strip the respec tive indications of said meter, means for.-intcrmittently rendering one of said knife edges inoperative for recording purposes,--a multi-colored ribbon arranged between said record strip and said *knife edges, anintermittent-ly actuated mechanism for feeding said ribbon, and means for varying the relative positions of said knife edges and said ribbon to cause different colors to be recorded to identify certain of said control cir- 

